Staff Selection Commission Sub Inspector Exam
Question : Reena, Veena, and Vimla can do a work in 4 hours, 8 hours, and 12 hours, respectively. In how much time will they finish the work working together?
Option 1: $\frac{2}{11}$ hours
Option 2: $5\frac{2}{11}$ hours
Option 3: $3\frac{2}{11}$ hours
Option 4: $2\frac{2}{11}$ hours
Correct Answer: $2\frac{2}{11}$ hours
Solution : Reena, Veena and Vimla can do a work in 4 hours, 8 hours, and 12 hours, respectively. Reena's 1 hour's work = $\frac{1}{4}$ Veena's 1 hour's work = $\frac{1}{8}$ Vimla's 1 hour's work = $\frac{1}{12}$ $\therefore$ (Reena + Veena + Vimla)'s 1 hour's work
Question : Under the provisions of which Article of the Constitution of India can the Bharat Ratna Award not be used as a prefix or suffix to the recipient's name?
Option 1: Article 17(2)
Option 2: Article 16(2)
Option 3: Article 18(1)
Option 4: Article 19(1)
Correct Answer: Article 18(1)
Solution : The correct answer is Article 18(1)
According to Article 18(1) of the Indian Constitution, neither the Bharat Ratna Award nor the Padma Award can be used as a prefix or suffix to the recipient's name. Additionally, section 1 of the Article on the "Abolition
Question : Directions: F is the brother of J. E is the sister of D. K is the sister of L. D is the son of L. J is the father of E. How is D related to F?
Option 1: Sister’s husband
Option 2: Brother’s son
Option 3: Wife
Option 4: Brother’s daughter
Correct Answer: Brother’s son
Solution : Following the instructions of the question, the family tree will be –
Here, the quadrilateral represents the male and the circular figure represents the female in the figure.
So, D is Brother’s son of F. Hence, the second option is correct.
Question : A sector of a circle has a central angle of 45° and an arc length of 22 cm. Find the radius of the circle. ( Use $\pi=\frac{22}{7}$)
Option 1: 32 cm
Option 2: 35 cm
Option 3: 28 cm
Option 4: 36 cm
Correct Answer: 28 cm
Solution : Given: Central angle = $45^\circ$ Arc length = 22 cm We know that, Length of the arc = $\frac{\theta}{360^\circ}\times2\pi r$ ⇒ $22=\frac{45^\circ}{360^\circ}\times2\times\frac{22}{7}\times r$ ⇒ $22=\frac{1}{8}\times2\times\frac{22}{7}\times r$ ⇒ $r=7\times4$ ⇒ $r=28$ cm Hence, the correct answer is 28 cm.
Question : Directions: Select the figure that will replace the question mark (?) in the following figure series.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to question figure – 1. In the given series, the black portion is repeated alternately. 2. The set of small circles moves along the corners in an anticlockwise direction. Thus, the missing part of the figure is alternated to –
Therefore, the complete figure is
Question : Select the option that can be used as a one-word substitute for the given group of words. Working or operating quickly and effectively in an organised way
Option 1: Efficient
Option 2: Extensive
Option 3: Excellent
Option 4: Effusive
Correct Answer: Efficient
Solution : The first option is the correct choice.
The one-word substitute for the given group of words "Working or operating quickly and effectively in an organized way" is "Efficient".
Explanation:
"Efficient" is an adjective that describes the ability to work or operate effectively and quickly
Question : Select the most appropriate ANTONYM of the given word. INFINITE
Option 1: limited
Option 2: vast
Option 3: eternal
Option 4: boundless
Correct Answer: limited
Solution : The first option is the correct answer.
The term infinite denotes something without limits or bounds, extending endlessly. Its opposite, limited, implies a restriction or constraint within certain boundaries.
The meanings of the other options are as follows:
Question : Comprehension:
Read the given passage and answer the questions that follow.
On May 2, 2018, severe dust storms and thunderstorms hit parts of Rajasthan, Uttar Pradesh, and other adjoining regions. Explaining the reasons behind such a severe weather system, M. Mohapatra, a senior scientist with the India Meteorological Department (IMD), said that dust storms and thunderstorms are a result of nearly similar weather conditions, like intense heat. Areas that have moisture in the air experience thunderstorms, while those which don't have moisture experience dust storms. "All such conditions were being fulfilled on that day. The region had moist easterly winds coming from the Bay of Bengal, and there was a western disturbance system too. All this together triggered the events on May 2," he added.
In simple terms, a dust storm can be explained as a phenomenon when strong winds carry dust over an extensive area.
As far as the timing of their occurrence is concerned, Mohapatra stated that there is no deviation in the time of occurrence of a dust storm or thunderstorm activity, as they usually peak in the pre-monsoon period.
These events happen between March and May only. In the pre-monsoon period, temperatures are very high, around 44–45 degrees Celsius, which leads to such activities.
Even though dust storms and thunderstorms are a common feature every year, there has been no focused work on studying the trends related to them. "In the coming years, there could be more instances of intense thunderstorms and sand storms, but they have to be studied in detail, looking at the data from over 30-40 years to notice a trend. Work has been more or less confined to cyclones and monsoon systems, but not much on dust storms or thunderstorms. It needs study," admitted Mohapatra.
The extent of damage caused by thunderstorm activity in India can be gauged from the data of India's National Crime Records Bureau (NCRB). As per the NCRB data, compared to other natural disasters like cyclones, floods, or heat waves, lightning kills more people in India. For instance, at least 25 per cent of the 10,510 accidental deaths attributable to forces of nature in 2015 were due to lightning. The number of deaths due to lightning has constantly remained over 2,000 every year since 2005.
Question:
Which of the following statements is NOT true according to the passage?
Option 1: The western disturbances cause dust storms in Rajasthan and nearby regions.
Option 2: Both, dust storms and thunderstorms occur due to similar weather conditions like intense heat.
Option 3: Thunderstorms occur where the air is dry.
Option 4: Cyclones and monsoon systems have been studied more than dust storms and thunderstorms.
Correct Answer: Thunderstorms occur where the air is dry.
Solution : The third option is correct.
The passage clearly states that areas with moisture in the air experience thunderstorms, while those without moisture experience dust storms. Therefore, thunderstorms are associated with moist conditions, and the statement implying thunderstorms occur where
Question : Select the INCORRECTLY spelt word.
Option 1: Gllidder
Option 2: Airplane
Option 3: Helicopter
Option 4: Ladybug
Correct Answer: Gllidder
The incorrect spelling gllidder contains the extra letters "l" and "d". The correct spelling is "glider". A glider typically refers to an unpowered aircraft that is designed to fly for long distances using upward air currents and
Question : If the 7-digit number $x$468$y$05 is divisible by 11, then what is the value of ($x$ + $y$)?
Option 1: 12
Option 2: 14
Option 3: 8
Option 4: 10
Correct Answer: 12
Solution : Given: If the 7-digit number $x468y05$ is divisible by 11. Then, Sum of the digits at odd places – Sum of the digits at even places = 0 or, 11 Now, Sum of the digits at odd places – Sum of the digits at even
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